/* generics in C#: generic classes carry type info at runtime.
*/
using System;
using System.Collections.Generic;

public class pain<A,B> where B:A {
 
  void f() {
      object[] a = new string[10]; //covariant arrays, same as java (mistake)

      // But why won't the following compile?
      // A[] b = new B[10];  // generic arrays are instances IList<T>
      // and in this interface T is INVARIANT (not in or out).  

      IList<object> n = new object[10]; // ok
      IList<object> m = new string[10]; // ok?     
      //IList<A> mm = new B[10];

      IList<object> mmm = new List<string>();
  }
}

public class nopain {
  public static void Main() {
  }
}